Makefile variables

Available Variables in local.mk

Variable name	Explanation	Example
DEFAULT_TC	Define default DSM version to be built by default. Multiple version can be passed in argument. This will be used to build all required packages when using make all-supported	DEFAULT_TC = 6.1 7.0
DISTRIBUTOR_URL
DISTRIBUTOR
PARALLEL_MAKE	Ability to build multiple archs in parallel. This also honor the -j flag within each arch parallel builds	PARALLEL_BUILD=4 make -j4 all-supported PARALLEL_BUILD=max make all-supported
PSTAT	Enable parallel compile stats using time when compiling This generates a build.stats.log in the working directory	===> MAKELEVEL: 1, PARALLEL_MAKE: max, ARCH: native, NAME: python3 90.55user 7.09system 0:11.58elapsed 842%CPU (0avgtext+0avgdata 115260maxresident)k 649375inputs+219627outputs (30major+1471914minor)pagefaults 0swaps
PUBLISH_API_KEY
PUBLISH_URL
PUBLISH_URL
REPORT_URL
DISABLE_GITHUB_MAINTAINER	The build tries to get the real github name and url for the maintainer of the package. With local builds, especially with small diyspk packages, you might reach the github api rate limit. Define this variable to any nonemty value to disable the use of the api.	DISABLE_GITHUB_MAINTAINER = 1

Available Variables in src/service-setup.sh

Most of the variables are provided by Synology DSM environment natively.

REMARKS:
Not all variables are available in all installation steps (i.e. SYNOPKG_PKGDEST is not available in service_preinst).

Variable name	Explanation	Value(s)
SYNOPKG_PKGNAME	Package name. All package names in SynoCommunity have lower case letters only and Packages of Synology start with uppercase letter.	<pkg_name> (i.e. python311, synocli-file, ...)
SYNOPKG_PKGDEST_VOL	The volume of the package installation.	/volume1, /volume2, ...
SYNOPKG_PKGDEST	Package installation path.	/var/packages/<pkg_name>/target The real name is ${SYNOPKG_PKGDEST_VOL}/@appstore/${SYNOPKG_PKGNAME}
SYNOPKG_PKGVAR	Package var directory. Synology provides this variable for DSM >= 7, but our generic installer adds this for other DSM versions for compatibility. You always can use /var/packages/<pkg_name>/var to access this folder (i.e. in config files).	/var/packages/<pkg_name>/var real name on DSM7: ${SYNOPKG_PKGDEST_VOL}/@appdata/${SYNOPKG_PKGNAME}

Available Variables in cross/ Makefiles

Variable name	Explanation	Example
%_TARGET	ability to overwrite the default target values: (CONFIGURE, BUILD, INSTALL, PATCH, PATCH, DOWNLOAD, STRIP) also every PRE_ and POST_ state	CONFIGURE_TARGET=umurmur_configure POST_PATCH_TARGET=python_post_patch
ADDITIONAL_EXTRACTFLAGS	add some extra parameter to the extract command such as specifying a set directories in particular to be extracted	ADDITIONAL_EXTRACTFLAGS = Directory1 ADDITIONAL_EXTRACTFLAGS += Directory2
ADDITIONAL_%FLAGS	add some extra flags besides the one set by spksrc values (c, cpp, cxx, ld, rust)	ADDITIONAL_CFLAGS ADDITIONAL_CPPFLAGS ADDITIONAL_CXXFLAGS ADDITIONAL_LDFLAGS ADDITIONAL_RUSTFLAGS
BUILD_DEPENDS	package depends only needed for build (will not be included in spk)	BUILD_DEPENDS = cross/ffmpeg
CARGO_BUILD_ARGS	When building a Rust binary, you can add additional installation options. Specify each option in a separate statement. This must not include the --path option (see RUST_SRC_DIR)	CARGO_BUILD_ARGS = --no-default-features CARGO_BUILD_ARGS += --locked
CMAKE_DISABLE_EXE_LINKER_FLAGS	Normally part of the CMAKE toolchain file are being set both CMAKE_EXE_LINKER_FLAGS and CMAKE_SHARED_LINKER_FLAGS. Although in some rare cases CMAKE_EXE_LINKER_FLAGS ends-up mixing-up linking where libraries aren't being found.	CMAKE_DISABLE_EXE_LINKER_FLAGS = 1
CMAKE_USE_NASM	Disabled by default (e.g. 0). If set to 1 it enable building native/nasm and add it the the PATH environment variable	CMAKE_USE_NASM = 1
CMAKE_USE_NINJA	Disabled by default (e.g. 0). If set to 1 it enable using Ninja for building	CMAKE_USE_NINJA = 1
CMAKE_USE_TOOLCHAIN_FILE	By default always ON. Allow using CMake build in "legacy" mode where it mimics autoconf style and set the environment as "target" hiding "host" tools instead of using normal cross-compiling mode with toolchain files https://cmake.org/cmake/help/book/mastering-cmake/chapter/Cross%20Compiling%20With%20CMake.html. This is mainly used for sources that have issues / do not support building with normal cross-compiling toolchain files.	CMAKE_USE_TOOLCHAIN_FILE = OFF
COMPILE_MAKE_OPTIONS	Additional parameters to add to the make command for package compilation	COMPILE_MAKE_OPTIONS = -f Makefile.linux
CONFIGURE_ARGS	add some extra flags to the configure option	CONFIGURE_ARGS = --disable-test
DEPENDS	package depends on those tools or libraries.	DEPENDS = cross/openssl
GNU_CONFIGURE	Use GNU Configure (adds --host --target flags)	GNU_CONFIGURE = 1
INSTALL_MAKE_OPTIONS	Additional parameters to add to the make command for package installation. This can be used for a specific target or to define variables. (default: install DESTDIR=$(INSTALL_DIR) prefix=$(INSTALL_PREFIX))	INSTALL_MAKE_OPTIONS = install DESTDIR=$(INSTALL_DIR) INSTALL_PREFIX=
KERNEL_ROOT	Root directory of the kernel source tree. Enabled when REQUIRE_KERNEL = 1	spksrc/cross/<app>/work-<arch>-<v>/linux
OPTIONAL_DEPENDS	package depends conditonally for instance only for some arch, used for dependency scanning	OPTIONAL_DEPENDS = cross/rnm
PKG_DIST_ARCH PKG_DIST_ARCH_LIST	For packages that have arch specific source files. Use PKG_DIST_ARCH in the definition of PKG_DIST_NAME and define a list of all dist archs with PKG_DIST_ARCH_LIST. As example see cross/libstd++	PKG_DIST_NAME = $(PKG_NAME).master.$(PKG_VERS).linux-core-$(PKG_DIST_ARCH).$(PKG_EXT) PKG_DIST_ARCH_LIST = x64 arm arm64
PKG_DIST_FILE	Provide a custom Name for the downloaded source file. Needed when filename does not contain package name (i.e. version only) to avoid conflicts in distrib folder.	PKG_DIST_NAME = v$(PKG_VERS).$(PKG_EXT) PKG_DIST_FILE = $(PKG_NAME)-$(PKG_VERS).$(PKG_EXT)
PKG_DIST_NAME	The name of the source file to download. When this name does not contain the package name add a definition for PKG_DIST_FILE	PKG_DIST_NAME = $(PKG_NAME)-$(PKG_VERS).$(PKG_EXT)
REQUIRE_KERNEL	The build process will prepare corresponding DSM kernel for module building.	REQUIRE_KERNEL = 1
REQUIRE_TOOLKIT	The build process will download and extract the corresponding DSM development toolkit.	REQUIRE_TOOLKIT = 1
REQUIRED_MAX_DSM	The build process will exit when a higher than DSM toolchain version is used. Used for DSM archs only.	REQUIRED_MAX_DSM = 6.999 to disable build for DSM >= 7
REQUIRED_MIN_DSM	The build process will exit when a lower than required DSM toolchain is used. Used for DSM archs only.	REQUIRED_MIN_DSM = 5.2
REQUIRED_MIN_SRM	The build process will exit when a lower than required SRM toolchain is used. Used for SRM archs only.	REQUIRED_MIN_SRM = 1.2
RUST_SRC_DIR	Configures a custom --path parameter for building a Rust binary. Optional, default is RUST_SRC_DIR = $(WORK_DIR)/$(PKG_DIR)	RUST_SRC_DIR = $(WORK_DIR)/$(PKG_DIR)/custom
UNSUPPORTED_ARCHS_TCVERSION	exclude those arches/DSM-version from being built	UNSUPPORTED_ARCHS_TCVERSION = armv7-1.2
UNSUPPORTED_ARCHS	exclude those arches from being built	UNSUPPORTED_ARCHS = cedarview
USE_NATIVE_CMAKE_LEGACY	Disabled by default (e.g. 0). If set to 1 it enable using a legacy version of cmake matching Debian 10 "Buster" using native/cmake-legacy. In turns for this legacy CMake version to be accessible in the default PATH from within cross/* it requires ENV += PATH=$(CMAKE_PATH):$$PATH for it to be detected properly.	USE_NATIVE_CMAKE_LEGACY = 1 include ../../mk/spksrc.cross-cmake.mk ENV += PATH=$(CMAKE_PATH):$$PATH
USE_NATIVE_CMAKE	Disabled by default (e.g. 0). If set to 1 it enable using latest "stable" version of cmake using native/cmake. In turns for this new CMake version to be accessible in the default PATH from within cross/* it requires ENV += PATH=$(CMAKE_PATH):$$PATH for it to be detected properly.	USE_NATIVE_CMAKE = 1 include ../../mk/spksrc.cross-cmake.mk ENV += PATH=$(CMAKE_PATH):$$PATH

Available Variables in native/ Makefiles

Variable name	Explanation	Example
%_TARGET	ability to overwrite the default target values: (CONFIGURE, BUILD, INSTALL, PATCH, PATCH, DOWNLOAD, STRIP) also every PRE_ and POST_ state	PRE_INSTALL_TARGET=mysql-connector-c_pre_install
CONFIGURE_ARGS	add some extra flags to the configure option	CONFIGURE_ARGS = --disable-test
DEPENDS	package depends on those tools	DEPENDS = native/go-1.4
GNU_CONFIGURE	Use GNU Configure (adds --host --target flags)	GNU_CONFIGURE = 1
NATIVE_%_FLAGS	add some extra flags besides the one set by spksrc values (ld, cxx, c)	NATIVE_LD_FLAGS=-L/some/path
PKG_DIST_FILE	Provide a custom Name for the downloaded source file. Needed when filename does not contain package name (i.e. version only) to avoid conflicts in distrib folder.	PKG_DIST_NAME = v$(PKG_VERS).$(PKG_EXT) PKG_DIST_FILE = $(PKG_NAME)-$(PKG_VERS).$(PKG_EXT)
PKG_DIST_NAME	The name of the source file to download. When this name does not contain the package name add a definition for PKG_DIST_FILE	PKG_DIST_NAME = $(PKG_NAME)-$(PKG_VERS).$(PKG_EXT)

Available Variables in spk/ Makefiles

Variable name	Explanation	Example
ADMIN_PORT	Port for web based management interface of package. Used to create a link in DSM package center. Required only if SERVICE_PORT is not defined or different. Another use case is to define ADMIN_PORT = $(SERVICE_PORT) together with NO_SERVICE_SHORTCUT = true to get the web interface in the DSM package center but not in the DSM UI.	ADMIN_PORT = 9091
ADMIN_PROTOCOL	Protocol for web based management interface. Optional	ADMIN_PROTOCOL = http
ADMIN_URL	URL context for web based management interface. Optional	ADMIN_URL = /
ARCH	Sets the arch to the specified value. Omitting a value sets noarch	ARCH =
BETA	Marks a package as beta. Remove variable if not	BETA=1
BUILD_DEPENDS	Dependencies declared here are used during the build process, but are not included in the final package.	BUILD_DEPENDS = cross/python3
CHANGELOG	Description of changes related to the SPK_REV.	CHANGELOG = "Enable sc-download group", CHANGELOG = "1. First entry<br/>2. Second entry"
CHECKPORT	Check if there is any conflict between the ADMIN_PORT and the ports which are listening on DSM. Optional, default is yes	CHECKPORT = yes
CONF_DIR	Location of the conf/ directory to include in package	CONF_DIR = src/conf
DEPENDS	Requirements to compile and/or run the software after packaging	DEPENDS = cross/libtorrent cross/$(SPK_NAME)
DESCRIPTION	Package description shown in Package Center. Multiple languages are supported. Quotes, double quotes and round brackets must be escaped by backslash.	DESCRIPTION = It\'s a \"great\" package, DESCRIPTION_FRE = C\'est un \"super\" package \(in french\)
DISPLAY_NAME	The name displayed in Package Center	DISPLAY_NAME = Transmission
DSM_UI_CONFIG	Package specific app/config file for DSM UI integration. Must be provided when url does not match / or port does not match SERVICE_PORT.	DSM_UI_CONFIG = src/app/config
DSM_UI_DIR	DSM UI directory location, relative to /var/packages/$PACKAGE/target/. Must be defined to provide a shortcut (icon) in DSM	DSM_UI_DIR = app
FWPORTS	Location of custom service configure file. Allows user to create firewall rules for this package. See SynoCommunity Ports	FWPORTS = src/${SPK_NAME}.sc
GCC_DEBUG_INFO	When set to 1 will change the optimization flags in order to include debug_info library symbols which in turns help for lower-level gdb debugging	GCC_DEBUG_INFO := 1
GCC_NO_DEBUG_INFO	When set to 1 will change the optimization flags in order to void generating any debug_info binary and library symbols which in turns allows significant space savings and accelerate the build process	GCC_NO_DEBUG_INFO = 1
HOMEPAGE	Software homepage	HOMEPAGE = http://www.transmissionbt.com
INSTALL_PREFIX	Obsolete. Default is INSTALL_PREFIX = /var/packages/$(SPK_NAME)/target and must not be changed.
INSTALL_REPLACE_PACKAGES	After your package is installed or upgraded, these to-be-replaced packages will be removed. The format consists of a package name and optional version.	INSTALL_REPLACE_PACKAGES = "nzbdrone>=20210329-19"
INSTALLER_SCRIPT	Location of package specific installer script. Replace generic installer. Use SERVICE_SETUP instead, when possible.	INSTALLER_SCRIPT = src/installer.sh
LICENSE	Software license	LICENSE = GPLv2/GPLv3
MAINTAINER_URL	URL of the creator or maintainer of the package. If the MAINTAINER is a valid github user the MAINTAINER_URL is evaluated to the github user account. If the MAINTAINER is not a github user, you sould define a valid URL.	MAINTAINER_URL = https://gihub.com/synocommunity
MAINTAINER	The creator of the package or current maintainer. Please use a github username. If you don't use a github username, you must define the MAINTAINER_URL	MAINTAINER = Diaoul
NO_SERVICE_SHORTCUT	Prevents DSM UI shortcut generation if set, when SERVICE_PORT does not provide http or should not be visible in DSM UI.	NO_SERVICE_SHORTCUT = true
OS_MIN_VERS	The minimum DSM version for DSM >= 6.1	OS_MIN_VERS = 6.2-23739
POST_STRIP_TARGET	Process extra installation after the stripping to the target files.	POST_STRIP_TARGET = deluge_extra_install
RELOAD_UI	obsolete, not documented by synology
REPORT_URL	Link to beta package feedback submission. In local.mk	REPORT_URL = https://github.com/SynoCommunity/spksrc/issues
REQUIRED_MAX_DSM	The build process will exit when a higher than DSM toolchain version is used. Used for DSM archs only.	REQUIRED_MAX_DSM = 6.999 to disable build for DSM >= 7
REQUIRED_MIN_DSM	The build process will exit when a lower than required DSM toolchain is used. Used for DSM archs only.	REQUIRED_MIN_DSM = 5.2
REQUIRED_MIN_SRM	The build process will exit when a lower than required SRM toolchain is used. Used for SRM archs only.	REQUIRED_MIN_SRM = 1.2
SERVICE_CERT_RELOAD	Package-relative path to a script for reloading the service after certificate changes	SERVICE_CERT_RELOAD = tools/ca_reloader.sh
SERVICE_CERT	Configure DSM certificate management for this service name from the firewall config file (*.sc). If several services are defined, only one can be picked here.	SERVICE_CERT = syncthing_webui
SERVICE_COMMAND	Service complete command line to fork with generic service support	SERVICE_COMMAND = $${SYNOPKG_PKGDEST}/bin/myservice --port $${SERVICE_PORT}
SERVICE_EXE (not supported)	Process executable absolute path for BusyBox start-stop-daemon with generic service support Deprecated as not supported with DSM 7.	SERVICE_EXE = $${SYNOPKG_PKGDEST}/bin/myservice
SERVICE_OPTIONS	Process options for BusyBox start-stop-daemon with generic service support	SERVICE_OPTIONS = --configuration $${SYNOPKG_PKGDEST}/var/myservice.conf --port $${SERVICE_PORT}
SERVICE_PORT_ALL_USERS	Grant access to DSM shortcut for all users. Default is true	SERVICE_PORT_ALL_USERS = true
SERVICE_PORT_PROTOCOL	Protocol for DSM shortcut. Default is http	SERVICE_PORT_PROTOCOL=https
SERVICE_PORT_TITLE	Protocol name for firewall interface. Default is package name	SERVICE_PORT_TITLE=imaps
SERVICE_PORT_URL	URL context path to access application from DSM shortcut. Default is /	SERVICE_PORT_URL=/myapp
SERVICE_PORT	TCP port of generic service support for firewall and DSM UI shortcut. For new packages please choose a free port and update the list SynoCommunity Used Ports	SERVICE_PORT = 8080
SERVICE_SETUP	Shell script functions and variables for package specific installation or service startup/stop process. Is not DSM start-stop-status script. When ever possible prefere SERVICE_SETUP over SSS_SCRIPT and INSTALLER_SCRIPT.	SERVICE_SETUP = src/service-setup.sh
SERVICE_USER	Runtime user account for generic service support. auto is recommended	SERVICE_USER=auto
SERVICE_WIZARD_GROUP (not supported)	Variable name from wizard which holds group name which controls service permissions to files on Shared Folder (not supported anymore)	SERVICE_WIZARD_GROUP = wizard_group
SERVICE_WIZARD_SHARE (deprecated)	Variable name from wizard which holds service storage on Shared Folder (deprecated, use SERVICE_WIZARD_SHARENAME)	SERVICE_WIZARD_SHARE = wizard_share
SERVICE_WIZARD_SHARENAME	Variable name from wizard which holds service storage on Shared Folder	SERVICE_WIZARD_SHARENAME = wizard_sharename
SPK_COMMANDS	List of folder/command to create soft links in /usr/local/{folder} for command line tools. Requires use of generic installer.	SPK_COMMANDS = bin/lua bin/luac
SPK_DEPENDS	Packages that must be installed before installation of this package is allowed	SPK_DEPENDS = "python3>=3.7.7-15:gnupg>=2.1.6"
SPK_ICON	Icon to be used in DSM. Must be of quadratic shape. Use at least 256x256 pixel.	SPK_ICON = src/deluge.png
SPK_LINKS (deprecated)	List of target:command to create soft links with different names for command line tools. Deprecated, as not supported with DSM 7. Use SPK_USR_LOCAL_LINKS or SKP_COMMANDS.
SPK_NAME	Package name	SPK_NAME = deluge
SPK_REV	Package Revision number. Starts at 1, goes up 1 for every subsequent release unrelated to SPK_VERS	SPK_REV = 5
SPK_USR_LOCAL_LINKS	List of folder:command to create soft links for command line tools that are not located in a standard folder one level below the installation target. Requires use of generic installer.	SPK_USR_LOCAL_LINKS = bin:env/bin/borg bin:env/bin/borgmatic
SPK_VERS	Software version	SPK_VERS = 1.3.12
SSS_SCRIPT	Location of package specific DSM start-stop-status. Use SERVICE_SETUP instead, when possible.	SSS_SCRIPT = src/dsm-control.sh
STARTABLE	Required. Declares if package starts a service	STARTABLE = no
UNSUPPORTED_ARCHS_TCVERSION	exclude those arches/DSM-version from being built	UNSUPPORTED_ARCHS_TCVERSION = armv7-1.2
UNSUPPORTED_ARCHS	Exclude these arches from being built	UNSUPPORTED_ARCHS = cedarview
USE_DEPRECATED_REPLACE_MECHANISM	If set to "yes", replacee will be uninstalled after replacer installed, and prereplace / postreplace scripts will not be executed. Otherwise, replacee will be uninstalled before replacer installed, and prereplace / postreplace will be executed. Default is no	USE_DEPRECATED_REPLACE_MECHANISM = yes
WHEELS	See Using Python wheels	WHEELS = src/requirements.txt
WIZARDS_DIR	Location of the wizard UI files	WIZARDS_DIR = src/wizard
WIZARDS_TEMPLATES_DIR	Location of the directory containing wizard UI files internationalized using mustache. Template files should be named using the same convention as the corresponding non templated files and internationalized resources should be named using the convention [wizard_name][language_suffix].yml where [wizard_name] would be the name of the wizard (e.g. file name without the suffix), [language_suffix] would be '' (empty string) for english, _[language_code]. For example install_uifile.yml, install_uifile_fre.yml.	WIZARDS_TEMPLATES_DIR = src/wizard_templates